I find myself doing a hydrological study, where I have to delimit the river basin based on a single river (polyline).

I have the DEM where the river of my interest is, and I have the river as a shapefile, but generally when I have made the delimitation of basins in ArcGIS, I have done it based on a network of drainage, but not on the basis of a only river of interest.

Is there a tool in which you can do all the hydrological processing, to obtain as a result the river basin of a specific river?

  • How is single river different to a network of drainage? Anyway this is very basic. Convert river to raster and the rest is the same process – FelixIP Mar 17 '17 at 23:36
  • Do you know where I can download a DEM with a resolution of 10 x 10 mts?. – Ivan Mantilla Apr 7 '17 at 15:16

I have not tried for a single river, but for a single point which belongs to the river for example.

You can delineate the draining area to a point within the river using the DEM. I do this using the GRASS tools included in the QGIS pack r.watershed and r.water.outlet.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.